I am a Cisco Instructor and have delivered 200 courses in the past 13 years. Most of the courses delivered are part of the Routing & Switching as well as the Security area.
Also received the Instructor Excellence Award (2021 Routing & Switching) from Cisco for four calendar years (2015, 2016, 2018, 2021). This award is based on the feedback from the students attending the courses and requires a grade of at least 95% from the course evaluation for each delivery in a single year.